b"J/88. J/Boats, 8.90m (29.19')J/BoatsMKIV UNDERDECK JIB REEFING & FURLINGHarkens MKIV Underdeck Jib Reefing & Furling line is the perfect solution for sailors who want an aerodynamic system with a minimal amount of equipment above deck. The underdeck furler provides a low-friction, clean layout solution that minimizes windage, while uncluttering the bow for easy anchor access. Offered in four sizes for boats from 6.718.3 m (22'60').Low-friction efficiency for easy furling and reefing Ball bearings between center hub and deck bearing, and main shaft reduce friction; drum and halyard swivel turn freely under load.Unit 1Foils rotate around headstay so headstay load is Unit 2 isolated from the unit for easy furling.Unit 3Stand up to sun, salt, and timeUnit 0Units 1, 2, 3: Aluminum line guard, torque tube, and swivels hardcoat-anodized, UV-stabilized for durability. Line guard is polyurethane-coated for additional corrosion protection. Threaded height adjuster uses dissimilar metals (stainless steel and bronze) to prevent galling.Unit 0: One-piece integrated aluminum deck bearing and line guard hardcoat-anodized for durability and corrosion resistance. Aerodynamic, clear-anodized aluminum Air foils handle extreme reefing loads. Triple-interlock foil joints withstand years of torque loading: foil connectors geometric shape interlocks Foil joints with foil; secures with syringe-injected adhesive; screws provide final lock. DO NOT use Harken equipment for human suspension unless product is specifically certified and labeled for such use.178 STA-LOK is a registered trademark of STA-LOK Terminals."